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DNS Concepts

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Course Overview

The Domain Name System (DNS) is a critical part of Internet infrastructure and the largest distributed Internet directory service. DNS translates names to IP addresses, which is required for web navigation, email delivery, and other Internet functions. To guarantee the availability of Internet services, it is important for networking professionals to understand DNS concepts, configurations, operations, and basic security aspects.

This course will discuss the concept of DNS, including basic security mechanisms.

This course will cover the following topics:

  • What is DNS?
  • DNS Features
  • Domain and Namespaces
  • Zones and Delegation
  • Querying the DNS Tree
  • Nameservers
  • Resource Records
  • Performance of DNS

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